Fendek fob canal-boats



JOSEPH ROWLAIWD, OF` HANCOCK, MARYLAND.

FENDER FOR CANAL-BOATS.

Specification of Letters Patent No; 5,147', dated .T une 5, y1847.

To all whom t may concern Be it known that I, JOSEPH ROWLAND, ofHancock, in the county of Washington and State of Maryland, haveinvented a new and useful Machine for Snubbing Canal-Boats and Bargeswhen Entering Locks; and I do hereby declare that the followingv is afull, clear, and eXact description of the construction and operation ofthe same, reference being had to the annexed drawings, making a part ofthis specification, in whichd Figure 1 is a perspective view, Fig. 2 isa view of the inside face of two movable fenders a a Fig. 1, Fig. 3 is aview of their connection with two arms b b Fig. l, Fig. 4 is a view ofthe inside ends of arms b b Fig. 1, Fig. 5 is a view of two levers c c,in Fig. 1, with their long mortises.

Large A isa section of t-he upper deck of a canal boat or barge.

In Fig. 1 c 0 are levers, Z cl al al are uprights supporting thefulcrums of the levers c c, e e are ropes passing from the lower ends ofthe levers o c through the top deck of the boat on opposite sides, f fare ropes passing from the top ends of the levers c c to the capstan g,5%?) are arms connected on the inside ends with the levers c o and onthe outside ends withthe movable fenders a a as shown at Fig. 8, a a aremovable fenders fastened to the edge of the front part of the bow deckshown at Fig. 1 and extending back, generally, about one foot beyondopposite Where arms b are placed.

The nature of my invention consists in placing on the back part ofthebow deck of a canal boat, or barge, a machine by which movable fenderscan be projected against the face of a lock when the boat is enteringit, and by their friction against its sides to snub theboat.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

I construct my canal boat or barge, in any of the known ways, t-hemovable fenders a a arms b b and levers c e shown at Fig. 1 I generallymake of tough timber from 3 to 4 inches square, the length of which willdepend on the width of the boat and lock though generally ranging from 4to 6 feet in length, my movable fenders a a I generally fasten on thetop of the bow deck with a bolt as shown at Fig. 1. I frame 4 uprightsal d cl d Fig. 1 into the back part of the bow deck of the boat ofsuicient strength to support the fulcrums of the levers c c Fig. 1 andwide enough apart to admit the arms make a long mortise through eachlever c c,

shown` at Fig. 5, the length of which must be the difference of thelength between the perpendicular and hypothanuse" of the triangle formedby the armsv Z) vb uprightsY open mortise on the end of each arm asshown Fig. 4 and fasten the levers c .c and arms 5 hinge fashion Fig. 1so that they can be worked to and fro at pleasure. I fasten on `theoutside ends of the arms b an iron T b b and levers a c to pass betweenthem, I

sol

cross on the ends of the arms I) b, already Vdescribed are to fit `intoand connect with it as shown Fig. 3 and have room to play to and fro asthe arms arek projected and force 1thel movable fenders against the faceof the oc r.

Iplace on the top deck of the boat over the above described mauhinery acapstan ga Fig. l to which one `end of the ropes f f Fig. 1 are fastenedand with their other ends'fastenedto the top ends of the levers c 0Fig. 1. I fasten the ropes e e Fig. 1 to the bottom of the levers c cpassing them through the top deck of the boat on. opposite sides asshown Fig. 1. When the capstan g is turned the ropes f f are wound upthe levers c c brought to a perpendicular position the arms .7) b forcedout beyond the sides of the boat and thus they force the movable fendersa' m, by their connection with them, against the face of the lock whenthe boat is entering it thereby snubbing the boat. Then to bring backagain to their home position the different parts mentioned the ropes e eFig.

1 are pulled until the movable fenders a av are brought back to theirhome position.

What I claim as my invention and desire to secure by Letters Patent, is-

The .attaching to, a canal boat and barge, movable fenders as hereindescribed, in combination with the arms, levers, ropes and uprights asherein described.

` JOSEPH ROWLAND.

Witnesses: n

E. C. 1WELLS, GEO. W. GRASH.

